Whether myocarditis in children is scary or not cannot be generalized. The severity of myocarditis depends on the extent and location of the lesion. In mild cases, there may even be no symptoms at all, while in severe cases, cardiogenic shock and sudden death may even occur. Children with common myocarditis can be completely asymptomatic, and most often experience palpitations and chest tightness. Antiviral drugs such as acyclovir and drugs to promote myocardial metabolism such as adenosine triphosphate should be applied under doctor’s guidance. At the same time, attention should be paid to strengthening nutrition, pay attention to rest, etc. to reduce the heart load and improve myocardial function, usually after a few weeks can be fully recovered. In severe cases, such as fulminant myocarditis and severe myocarditis, fainting, cardiogenic shock and even sudden death can occur, with rapid progress and high mortality, and it is very important to ensure cardiopulmonary support system on the basis of drug treatment. Children’s myocarditis should go to the regular hospital in time, under the guidance of the doctor for standardized treatment, so as not to delay the condition, resulting in adverse consequences.